Oil repellant fibrous materials and preparation thereof

ABSTRACT

THE PRESENT INVENTION IS DIRECTED TO THE USE OF COMPOSITIONS OF MATTER HAVING THE FORMULA   2-(R1-X-),4,4-DI(R-)-2-OXAZOLINE   WHEREIN R IS-CH2OH, LOWER ALKYL HAVING 1 UP TO ABOUT 3 CARBON ATOMS OR-CH2OOCR2, R2 IS AN ALKYL HAVING 1 UP TO ABOUT 22 CARBON ATOMS OR FLUOROALKYL HAVING 1 UP TO ABOUT 22 CARBON ATOMS; R&#39;&#39; IS AN ALKYL HAVING 1 UP TO ABOUT 21 CARBON ATOMS OR FLUOROALKYL HAVING 1 UP TO ABOUT 21 CARBON ATOMS WHEREIN NOT LESS THAN 75% OF THE HYDROGEN ATOMS HAVE BEEN REPLACED BY FLUORINE ATOMS, AND WHEREIN AT LEAST 2 OF THE HYDROGEN ATOMS ON AT LEAST ONE TERMINAL CARBON ATOM HAVE BEEN REPLACED BY FLUORINE ATOMS WITH THE PROVISO THAT WHEN R&#39;&#39; IS AN ALKYL RADICAL AT LEAST ONE OF THE SUBSTITUENTS DESIGNATED R IS THE RADICAL-CH2OOCR2 AND THE SUBSTITUENT R2 IS A FLUOROALKYL RADICAL HAVING 1 UP TO ABOUT 22 CARBON ATOMS WHEREIN NOT LESS THAN 75% OF THE HYDROGEN ATOMS HAVE BEEN REPLACED BY FLUORINE ATOMS, AND WHEREIN AT LEAST 2 OF THE HYDROGEN ATOMS ON AT LEAST ONE TERMINAL CARBON ATOM HAVE BEEN REPLACED BY FLUORINE ATOMS; AND X IS A DIVALENT RADICAL SUCH AS   -CH2-, -CF2-, -CH(-F)-, OR &gt;C=CH-R9   WHEREIN R9 IS HYDROGEN, ALKYL OR ARYL, TO PROVIDE OILREPELLENT FIBROUS MATERIALS. IT IS ALSO DIRECTED TO A METHOD FOR THE PREPARATION OF OIL-REPELLENT FIBROUS MATERIALS FROM COMPOSITIONS OF THE FORMULA   2-(R3-A-),4,4-DI(R4-)-2-OXAZOLINE   WHEREIN R3 IS IS A FLUOROALKYL RADICAL HAVING 1 UP TO ABOUT 21 CARBON ATOMS WHEREIN NOT LESS THAN 75% OF THE HYDROGEN ATOMS HAVE BEEN REPLACED BY FLUORINE ATOMS AND WHEREIN AT LEAST 2 OF THE HYDROGEN ATOMS ON AT LEAST ONE TERMINAL CARBON ATOM HAVE BEEN REPLACED BY FLUORINE ATOMS; R4 IS-CH2OH, LOWER ALKYL HAVING 1 UP TO ABOUT 3 CARBON ATOMS OR-CH2OOCR5; R6 IS A FLUOROALKYL RADICAL HAVING FROM ABOUT 2 TO ABOUT 22 CARBON ATOMS WHEREIN NOT LESS THAN 75% OF THE HYDROGEN ATOMS HAVE BEEN REPLACED BY FLUORINE ATOMS, AND WHEREIN AT LEAST 2 OF THE HYDROGEN ATOMS ON AT LEAST ONE TERMINAL CARBON ATOM HAVE BEEN REPLACED BY FLUORINE ATOMS; AND A IS   -CH2-, -CF2-, OR -CH(-F)-   BY REACTING AN AMINO ALCOHOL OF THE FORMULA   (G)2-C(-NH2)-CH2-OH   WHEREIN G IS LOWER ALKYL HAVING 1 UP TO ABOUT 3 CARBON ATOMS OR-CH2OH WITH A FLOROALKYLMONOCARBOXYLIC ACID HAVING FROM ABOUT 3 TO ABOUT 23 CARBON ATOMS WHEREIN NOT LESS THAN 75% OF THE HYDROGEN ATOMS HAVE BEEN REPLACED BY FLUORINE ATOMS AND WHEREIN AT LEAST 2 OF THE HYDROGEN ATOMS ON AT LEAST ONE TERMINAL CARBON ATOM HAVE BEEN REPLACED BY FLUORINE ATOMS.

United States Patent 3,677,812 OIL REPELLANT FIBROUS MATERIALS AND PREPARATION THEREOF Domenick Donald Gagliardi, East Greenwich, R.I., as-

signor to Commercial Solvents Corporation, New York,

ABSTRACT OF THE DISCLOSURE The present invention is directed to the use of compositions of matter having the formula wherein R is 'CH OH, lower alkyl having 1 up to about 3 carbon atoms or -OH OOCR R is an alkyl having 1 up to about 22 carbon atoms or fluoroalkyl having 1 up to about 22 carbon atoms; R is an alkyl having 1 up to about 21 carbon atoms or fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when R' is an alkyl radical at least one of the substituents designated R is the radical -CH OOCR and the substituent R is a fluoroalkyl radical having 1 up to about 22 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and\ wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and X is a divalent radical such as wherein R is hydrogen, alkyl or aryl, to provide oilrepellent fibrous materials. 'It is also directed to a method for the preparation of oil-repellent fibrous materials from compositions of the formula wherein R is a fluoroalkyl radical having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; R is CH OH, lower alkyl having 1 up to about 3 carbon atoms or -CH OOCR R is a fluoroalkyl radical having from about 2 to about 22 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one- 3,677,812 Patented July 18, 1972 ice terminal carbon atom have been replaced by fluorine atoms; and A is by reacting an amino alcohol of the formula NH: G-(il-OHzOH wherein G is lower alkyl having 1 up to about 3 carbon atoms or CH OH with a fluoroalkylmonocarboxylic acid having from about 3 to about 23 carbon atoms wherein not less than of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms.

This application is a division of application Ser. No. 600,713, filed Dec. 12, 1966.

This invention relates to novel compositions. In a particular aspect this invention relates to novel fluorooxazolines, to ploymers of these novel fluorooxazolines and to methods for producing said fluorooxazolines and said polymers.

The novel compositions of the present invention are useful for rendering fibrous materials, e.g. textiles repellent to oil and soil. The novel compositions of the present invention are also useful as antimicrobials and as insecticides.

One object of the present invention is the provision of novel compositions of matter of the formula wherein R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to about 3 carbon atoms and CH OOCR R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms; R is a radical selected from the group consisting of alkyl having from-l up to about 21 carbon atoms and fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when R is an alkyl radical at least one of the substituents designated R is the radical CH OOCR and the substituent R is a fluoroalkyl radical having 1 up to about 22 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atom; and X is a divalent radical selected from the group consisting of H F F I wherein R is a radical selected from the group consisting of hydrogen, alkyl and aryl.

Included-among the novel compositions of the present invention are m r r 241g, IE-perfiuorodo de cy-l)-4-hydroxymethyl-4-ethyl- 2-oxazoline,

2-perfluoroheptyl-4,4-dimtethyl-Z-oxazoline,

2-'(lIj-perfluoropropyl)-4,4-bis(stearoyloxymethyl)- 2-oxazoline,

2-perfluorohexyl-4-stearoyloXymethyli-perfiuoroheptanoyloxymethyl-Z-oxazoline,

2-( 1g, 1g,2g,2 -perfluoropentadecyl -4,4-bis(hydroxymethyl)-2-oxazoline,

2-perfluoropentadecyl-4,4-bis(perfiuorotetradecanoyloxymethyl-2-oxazoline,

2-( l-perfluorohexadecylethenyl) -4,4-bis(stearoyloxymethyl-Z-oxazoline,

2-( l-perfluoropropylethenyl-4,4-bis ZEJE-perfluoropentanoyloxymethyl)-2-oxazoline,

2- l-perfluorodecylethenyl) -4,4-bis (hydroxymethyl) -2- oxazoline,

2- l-perfluoro decyll-butenyl) -4-ethyl-4-hydroxy- [methyl-Z-oxazoline,

2-heptadecyl-4,4-bis(ZEJE-perfluoropentanoyloxyg methyl)-2-oxazoline,

2-nonyl-4,4-bis (perliuorotetradecanoyloxymethyl) -2- oxazoline, v a r r 2- (tig-perfluorooctyl) -4,4-bis(hydroxymethyl) -2- oxazoline,

2-octyl-4propyl-4-(perfluoroheptanoyloxymethyl)- 2-oxazoline,

2-[ 1-pertluorohexadecyl-Z-phenyl) pentenyl] -4-propyl- 4-hydroxymethyl-2-oxazoline and the like. i

A second object of the present invention is a method for preparing Compounds A haw'ng the formula R! HgC----(JR wherein R is a fluoroalkyl radical having from 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to about 3 carbon atoms and -CH OOCR R is a fluoroalkyl radical having from about 3 to about 22 carbon atoms wherein not less than 7 5% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and A is a divalent radical selected from the group consisting of In accordance with the method of the second object of this invention for manufacturing Compounds A, an amino alcohol of the formula wherein G is a radical selected from the group consisting of lower alkyl having from 1 up to about 3 carbon atoms and CH OH is reacted with a fluoroalkylmonocarboxylic acid having from about 3 to about 23 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms. The

'"reaction is'carried out 'under condensation conditions.

, ture of amino alcohol and fluoroalkylmonocarboxylic acid at a temperature in the range of from about 100 to about 250 C. and preferably from about 160 to about 240 C. I

The reaction may be carried out in the presence of 1 a suitable solvent. Such solvents include hexane, octane,

benzene, xylene, toluene, butanol, etc. Some of the solvents canadvantageously also be used as azeotropic agents to aid in the removal of the water of reaction.

A third object of the presentinvention is a method for preparing Compounds B having the following formula wherein R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to 3 carbon atoms and CH 0OCR R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms with the proviso that the R substituent is a different radical than the R substituent; R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms; R is a radical selected from the group consisting of alkyl having 1 up to about 21 carbon atoms and fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when R is an alkyl radical the substituent designated R is a fluoroalkyl radical having 1 up to about 22 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine; and A is a divalent radical selected from the group consisting of H F H t and H F F In accordance with the method of the third object of this invention for manufacturing Compounds B, there is provided a reaction mixture consisting essentially of a polyhydroxyamino alcohol of the formula wherein M is a radical selected from the group consisting of lower alkyl having from 1 up to about 3 carbon atoms and --CH OH and an acid selected from the group consisting of a fluoroalkylmonocarboxylic acid having from about 3 to about 23 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms and an alkyl radical having from 3 to about 23 carbon atoms in a molar ratio of acid to alcohol of in the range of about 1:1 to about 2:1; the said amino alcohol and said acid are then reacted under condensation conditions until from about 2 to about 3 mole equivalents of water are separated, then an acid selected from the group consisting of monocarboxylic acid having from 2 up to about 23 carbon atoms, as for example stearic acid, octanoic acid, dodecanoic acid and the like, and fluoroalkylmonocarboxylic acid having from 2 up to about 23 carbon atoms with the proviso that the said acid is a difierent acid than the acid initially employed is added to the reaction mixture and the reaction mixture is heated until from 1 to about 2 additional mole equivalents of water are separated. The 2-step reaction is illustrated by the following equation where Z represents a fluoroalkyl radical and Y an alkyl radical Each step of the two-step reaction is generally carried out under condensation conditions at a temperature in the range of from about 100 to about 250 C. and preferably from about 160 to about 240 C.

The reaction can be carried out in the presence of a suitable solvent such as, for example, hexane, octane, benzene, xylene, toluene, butanol and the like. Some of the solvents can advantageously be used as azeotropic agents in the removal of the water of reaction.

A fourth object of the present invention is a method for preparing Comounds C corresponding to the formula wherein R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to about 3 carbon atoms and CH OOCR R is a radical selected from the consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atmos; R is a radical selected from the group consisting of alkyl having 1 up to about 21 carbon atoms and fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when R is an alkyl radical at least one of the substituents designated R is the radical CH OOCR and the substituent R is a fluoroalkyl radical having 1 up to about 22 carbond atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and R is a radical selected from the group consisting of hydrogen, alkyl and aryl.

In accordance with the method of the fourth object of this invention for manufacturing Compounds C an organic carbonyl compound having 1 up to about 15 carbon atoms of the formula R -CHO wherein R is aryl, alkyl or hydrogen, as for example, formaldehyde, benzaldehyde, acetaldehyde, butyraldehyde andthe like, is reacted with an oxazoline having the formula wherein R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to about 3 carbon atoms and -CH OOCR R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms; R is a radical selected from the group consisting of alkyl having 1 up to about 21 carbon atoms and fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when R is an alkyl radical at least one of the substituents designated R is the radical CH OOCR and the substituent R is a fluoroalkyl radical having 1 up to about 22 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and A is a divalent radical selected from the group consisting of under reaction conditions to react the carbonyl group of the carbonyl compound with the a-carbon atom of the radical attached to the -2-position of the oxazoline ring.

The reaction is generally carried out at temperature in in the range of from about 60 to about 250 C., preferably from about to about C. and advantageously in the presence of catalytic amounts of an acidic catalyst. The amount of catalyst will depend, among other things, on the particular catalyst, the particular fluorooxazoline, the particular carbonyl compound and the temperature of reaction. The amount of catalyst generally will range from about 0.01 to about 10% and preferably from about 0.1 to about 5.0% by weight based on the weight of the fluorooxazoline.

Suitable acidic catalysts include inorganic mineral acids such as sulphuric, hydrochloric and phosphoric acids; organic carboxylic and sulphonic acids such as formic, benzenesulphonic, p-xylenesulphonic, p-toluene sulphonic, and napthalenesulphonic acids; inorganic and organic salts such as sodium bisulphate, primary ammonium phosphate, calcium fluoride, zinc chloride, aluminum chloride, ammonium chloride, ammonium bromide, hydroxylammonium chloride, boron trifluoride and the like.

The reaction can also be carried out in the presence of solvents, for example, hydrocarbons such as hexane, octane, benzene, xylene, butanol and the like. Some of the solvents can advantageously also be used as azeotropic agents to aid in the removal of water resulting from the reaction.

In the reaction it is generally advantageous to include a polymerization inhibitor in the reaction mixture to prevent the formation of polymeric products when the monomer is desired. It is therefore desirable to use a polymerization inhibitor such as di-betanaphthol, hydroquinone, p-hydroxydiphenylamine, 2,5 di-tert-butylhydroquinone, calcium carbonate and the like. The inhibitor is typically used in an amount from about 0.1 to about 10% and preferably from about 0.5 to about by weight based on the weight of the fluorooxazoline.

A fifth object of the present invention is the provision of homopolymers and copolymers of Compounds C.

Compounds C can be homopolymerized and copolymerized to provide novel polymers. A wide variety of ethylenic comonomers or mixtures thereof are copolymerizable with Compounds C, as for example, those having 2 up to about 20 carbon atoms and one or more C=C groups. Examples of such ethylenic comonomers include the olefins, e.g. ethylene, propylene, isobutylene; esters, e.g. methyl methacrylate, methyl acrylate, butyl methacrylate; vinyl, vinylidine halides, e.g. vinyl chloride and vinylidine chloride; vinyl carboxylates, e.g. vinyl acetate vinyl propionate, vinyl stearate; and vinyl aryls, e.g. styrene, methyl styrene.

. Compounds C are polymerizable with the aid of polymerization catalysts, for instance, a free-radical catalyst such as one or more azo-type or Redox catalyst systems. Typical catalysts are azo bis(isobutyronitrile), azodiisobutyramide, dimethyl-, diethyl-, or dibutylazodiisobutyrate, and the like. One or a mixture of catalysts may be used in amounts generally of about 0.05% to 2% by weight based on the weight of monomer. Polymerization may be effected in bulk, in solution or in emulsion. The use of a Redox system is especially eliective in the case of emulsion polymerization, for instance, in conjunction with peroxide catalysts such as benzoyl peroxide. Temperatures of polymerization generally range from about 0 to about 100 C. While the copolymers of the present invention are not limited to specific ratios of Compounds C to other polymerizable ethylenic monomers, the polymerization mixture typically contains in excess of by weight of Compound C based on the total monomer in the mixture.

The invention will be understood more fully by reference to the following specific examples. It is understood that the examples are presented for purposes of illustration only and are not intended as a limitation of the invention.

EXAMPLE 1 2-perfluoroheptyl 4,4 bis(hydroxymethyl) -2-oxazoline was prepared as follows.

. .To a 250 ml. round-bottom flask equipped with thermometer, stirrer, Vigreux column and electric heating means was charged 82.8 g. of perfluorooctanoic acid and 24.2 g. of tris(hydroxymethyl)aminomethane. The resulting mixture was heated with stirring over an increased temperature range of 160 to 210 C. for 2 hours.

84 g. of Z-perfluoroheptyl 4,4 bis(hydroxymethyl)- 2-0xazo1ine was obtained.

EXAMPLE 2 2- (g, 1g perfluorotri-decyl)-4-hydroxymethyl-4-ethyl- 2-oxazoline is prepared by essentially the same procedure used in Example 1 except that 2g, 2g, 3g, 31 1-perfluorotetradecanoic acid is substituted for perfluorooctanoic acid and Z-amino 2 ethyl-1,3-propanediol is substituted for tris (hydroxymethyl) aminomethane.

EXAMPLE 3 2-perfluorooctyl 4,4 dimethyl-2-oxazoline is prepared by essentially the same procedure used in Example 1 except that perfluorononanoic acid is substituted for perfluorooctanoic acid and 2-amino-2-methylal-propanol is substituted for tris(hydroxymethyl)aminomethane.

EXAMPLE 4 2-(8-H-perfluorooctyl) 4,4 bis(hydroxymethyl)-2- oxazoline is prepared by essentially the same procedure used in Example 1 except that S-H-perfluoronononanoic acid is substituted for perfluorooctanoic acid.

EXAMPLE 5 2 perfluoroheptyl 4,4 bis(perfluoroocta.noyloxymethyl) -2-oxazoline was prepared as follows.

To a 250 ml. round-bottom flask equipped with stirrer, thermometer, Vigreux column, and electric heating means was charged 124.2 g. of perfluorooctanoic acid and 12.1 g. of tris(hydroxymethyl)aminomethane. The resulting mixture is heated with stirring over an increased temperature range of 160 to 240 C. for four hours.

118 g. of 2-perfluoroheptyl 4,4 bis(perfluorooctan- 0yl0xymethyl)-2-oxazoline was obtained.

EXAMPLE 6 Z-perfiuoroheptyl 4 methyl-4-stearoyloxymethy1-2- oxazoline was prepared by the following procedure.

A 500 m1. flask equipped with a stirrer, thermometer, Vigreux column, and an electric heating means was charged with 82.8 g. of pentadecafiuorooctanoic acid and 18.2 g. of 2-amino-2-methyl-1,3-propanediol. The resulting mixture was heated with stirring over an increased temperature range of from 160 to 220 C. for 2 hours. The reaction mixture was then permitted to cool to about 160 C. and 56.8 g. of stearic acid was added thereto. The resulting reaction mixture was then heated for an additional 2-hour period over an increased temperature range of 160 to 240 C.

2-perfluoroheptyl 4 methyl-4stearoyloxymethyl-2- oxazoline was obtained.

EXAMPLE 7 Preparation of 2-(l-perfluoroheptylethenyl) 4,4 dimethyl-2-oxazoline.

A mixture of g. of 2-perfluoroheptyl-4,4-dimethyl- 2-oxazoline and 13 g. of powdered paraformaldehyde is charged to a 500 ml. flask fitted with a sealed stirrer, thermometer, Vigreux column and electric heating means. Attached to the top of the column is a. Water-separator and reflux condensor. The mixture is heated to -120" C. for approximately 1 hour. To the heated mixture is then added 0.4 g. of hydroquinone and 50 m1. of benzene. The mixture is then heated under reflux with azeotropic removal of Water at an increased temperature range of C. for approximately 5 hours. 7

2-(l-perfluoroheptylethenyl) 4,4 dimethyl-2-oxazoline is obtained.

The homopolymer of this product is obtained by essentially the same procedure except that the hydroquinone is omitted from the reaction mixture and a polymerization initiator, e.g. benzoylperoxide, is used.

EXAMPLE 8 The copolymer of 2-(l-perfluoroheptylethenyl)-4,4-dimethyl-Z-oxazoline and methyl methacrylate is prepared by the following procedure.

A mixture of 50 grams freshly distilled methyl methacrylate, 50 grams 2 (1 perfluoroheptylethenyl)4,4-dimethyl-2-oxazoline and 0.2 gram azo bis(isobutyronitrile) is heated at about 80 C. for about 24 hours under a blanket of nitrogen in a sealed container. A polymeric material is obtained.

As previously indicated, the monomers and polymers of this invention are useful for rendering fibrous materials, e.g. textiles repellent to oil water and soil. The novel compositions of the present invention in which the substituent on the 2-position of the oxazoline ring contain 6 or more carbon atoms are preferred for this use. v a

The compositions of the present invention can be applied to fibrous materials from any suitable form of liquid application medium and by any suitable procedure. Conventional impregnating, padding and treating apparatus can be employed. Usually, it is convenient to apply the composition by dipping, padding or emersing. Brushing, spraying, roller-coating, electro-static coating, doctor-blade coating and like procedures may also be employed. Following application, the treated fibrous material is preferably dried and then subjected to treatment with heat, e.g. at temperatures in the range of from about 100 to 450 F. for a period of time typically in the range of from about seconds to about 5 hours.

The compositions of the present invention may be applied to fibrous materials in conjunction with other agents such as for example, softening agents, dyes, emulsifiers, pigments, lubricants, moth-proofing agents, flame-proofing agents, shrink-proofing agents, sizes, brightening agents, and the like.

When the compositions of the present invention are used to provide oil and soil repellent finishes for textiles, it is preferable in order to obtain optimum durability of the finish to incorporate a thermosetting resin binder and a curing catalyst for said resin binder in the liquid application medium. Any suitable thermosetting resin binder which is compatible with the compositions of the present invention may be employed. Such thermosetting resin binders are well known and many are commercially available. Examples of thermosetting resin binders which may be utilized include nitrogen-containing compounds having more than 1 reactive methylol group such as ureaformaldehyde condensation products, for example dimethylolethylene urea, dimethylol urea, dimethylol-1,3-propylene urea, dimethylol-1,3-butylene urea, dimethylol-dihydroxyethylene urea; the tn'azones such as 1,3-bis(hydroxymethy1)-tetrahy dro 5-ethyl 2 triazone, 1,3-bis(hydroxymethyD-tetrahydro-S propyl 2 triazone; the pyrimidinones, such as 1,3-bis(hydroxymethyl)-tetrahydro-2-pyrimidinone, 1,3 bis(hydroxymethyl)-tetrahydro-5-methyl- Z-pyrimidinone, 1,3-bis(hydroxymethyl)-tetrahydro-5-hydroxy-2-pyrimidinone; the melamine formaldehyde condensation products, for example, dimethylolmelamine, tri methylolmelamine, hexamethylolmelamine, and the like. Further types of thermosetting resin binders are those having more than 1 functional aziridinyl group, for example, tris(aziridinyl) phosphine oxide, tris (aziridinyl) phosphine sulfide, carbonyl bis-aziridine, N,N'-bis(ethyleneiminoformyl) ethylenediamine and the like. Additional types of thermosetting resin binders are the dialdehydes and the polymeric acetals. Further types of thermosetting resin binders are the epoxides having more than one functional group, for example 1,3-diglycidylglycerol, the diglycidylether of ethylene glycol, vinyl butadiene diepoxide and the like. Mixtures of the foregoing thermosetting resin binders may also be utilized.

Any suitable curing catalyst which is compatible with the compositions of the present invention may be employed. Examples of such curing catalysts include zirconyl chloride, magnesium chloride, ammonium chloride, zinc nitrate, 2-amino-2-methyl-1-propanol hydrochloride, 2- amino2-ethyl-1,3-propanediol hydrochloride and the like.

The examples which follow demonstrate the effectiveness of compositions of the present invention in imparting oil repellency to textiles. 1

EXAMPLE 9 A padding bath was prepared by dispersing 2 parts by weight of 2 perfluoroheptyl 4,4-bis (hydroxymethyl)-2- oxazoline prepared in accordance with the procedure of Example 1 in 98 parts by weight of water. Pieces of cotton fabric were padded with this bath and were dried for 5 minutes at 250 F. and then cured for 5 minutes at 300 F. The resulting pieces of fabric were oil repellent.

10 EXAMPLE 10 A padding bath was prepared containing 2 parts 2- perfluoroheptyl-4,4-bis (hydroxymethyl) 2 oxazoline, 5 parts dimethylolmelamine, 1 part zinc nitrate (50% aqueous solution) and 92 parts water. Pieces of cotton fabric were padded with this bath and were dried for 5 minutes at 250 F. and cured at 300 F. for 5 minutes. The resulting pieces of fabric were oil repellent.

The fabrics obtained from Examples 9 and 10 were tested for oil repellency. The oil repellency was determined in accordance with the test described in Minnesota Mining & Manufacturing Company, Textile Chemical Bulletin, Appendix A, January 1962, page 1 and referred to as the 3M Oil Repellency Test. The test is based on the diiferent penetrating properties of two hydrocarbon liquids, namely, mineral oil and n-heptane. The mineral oil and n-heptane proportions for each rating were selected to give oil stain resistance ratings comparable to spray ratings of American Association of Textile Colorists and Chemists (AATCC) Test 22-1952. Samples of the fabric were dry cleaned with perchloroethylene before testing. Samples of untreated cotton fabrics were also tested and served as a control. The results of the test on the fabrics are given in Table I.

TABLE I 011 rating y Example No. Initial cleaned Control 0 0 9 50 10 100+ 100+ wherein R is a radical selected from the group consisting of -CH OH, lower alkyl having 1 up to about 3 carbon atoms and CH OOCR R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms; R is a radical selected from the group consisting of alkyl having 1 up to about 21 carbon atoms and fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when 'R' is an alkyl radical at least one of the substituents designated R is the radical CI-I OOCR and the substituent R is a fluoroalkyl radical having 1 up to about 22 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and X is a divalent radical selected from the group consisting of 1 1 wherein R is a radical selected from the group consisting of hydrogen and alkyl and aryl of up to about -l4 carbon atoms.

2. The fibrous material of claim 1 wherein the material is a textile material.

3. The fibrous material of claim 1 wherein the finish also comprises a thermosetting resin binder and a curing catalyst.

4. The fibrous material having an oil-repellent finish, said. finish comprising a homopolymer of the formula wherein 'R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to about 3 carbon' atoms and CH OOCR R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms; R is a radical selected from the group consisting of alkyl liavfn'g l upto asset 21 carbon atoms and fiuoroalkyl having 1 up to about 21 carbon atoms wherein not less than 75% of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the proviso that when R is an alkyl radical at least one of the substituents designated R is the radical CH OOCR and the substituent R is a fiuoroalkyl radical having 1 up to about 22 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms, and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and R is a radical selected from the group consisting of hydrogen and alkyl and aryl of up to about 14 carbon atoms.

5. The fibrous material of claim 4 wherein the material is a textile material. Y

6. The fibrous material of claim 4 wherein the finish also comprises a thermosetting resin binder and a curing catalyst.

7. A fibrous material having an oil-repellent finish, said finish comprising a copolymer of a compound containing 12 from 2 up to about 20 carbon atoms and having at least one C=C group and, a composition of the formula wherein R is a radical selected from the group consisting of CH OH, lower alkyl having 1 up to about 3 car bon atoms and -CH OOCR R is a radical selected from the group consisting of alkyl having 1 up to about 22 carbon atoms and fluoroalkyl having 1 up to about 22 carbon atoms; R is a radical selected from the group con-" sisting of alkyl having 1 up to about 21 carbon atoms and fluoroalkyl having 1 up to about 21 carbon atoms wherein not less than of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms with the'proviso that when R is an alkyl radical at least one of the substituents designated R is the radical CH OOCR and the'substituent R is a fluoroalkyl radical having 1 up to about '22 carbon atoms wherein not less than 75 of the hydrogen atoms have been replaced by fluorine atoms and wherein at least 2 of the hydrogen atoms on at least one terminal carbon atom have been replaced by fluorine atoms; and R is a radical selected from the group consisting of hydrogen and alkyl and aryl of up togabout 14 carbon atoms. Y

8. The fibrous material of claim 7 wherein the material is a textile material.

9. The fibrous material of claim 7 wherein the finish also comprises a thermosetting resin binder and a curing catalyst.

References Cited Fluck 117l43 X WILLIAM D. MARTIN, Primary Examiner T. G. DAVIS, Assistant Examiner U5. (:1. x.-R. 117-421, 139.4, 139.5 CD, 143 R, 143 A 

